932 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- McGill UniversityCA41 papers
- Trottier Space Institute at McGillCA11 papers
- Center for Astrophysics Harvard & SmithsonianUS4 papers
- Harvard UniversityUS4 papers
- University College LondonGB4 papers
- University of PennsylvaniaUS4 papers
- University of TorontoCA4 papers
- Case Western Reserve UniversityUS3 papers
- Heidelberg UniversityDE3 papers
- Herzberg Institute of AstrophysicsCA3 papers
- Jewish General HospitalCA3 papers
- Massachusetts Institute of TechnologyUS3 papers
10 papers · 1 filter
Group Sequential Design with Posterior and Posterior Predictive Probabilities
Luke Hagar, Shirin Golchi, Marina B. Klein
Group sequential designs drive innovation in clinical, industrial, and corporate settings. Early stopping for failure in sequential designs conserves experimental resources, wherea…
Meta-analysis of median survival times with inverse-variance weighting
Sean McGrath, Cheng-Han Yang, Jonathan Kimmelman +3
We consider the problem of meta-analyzing outcome measures based on median survival times. Primary studies with time-to-event outcomes often report estimates of median survival tim…
Is checking for sequential positivity violations getting you down? Try sPoRT!
Arthur Chatton, Michael Schomaker, Miguel-Angel Luque-Fernandez +2
Background: Sequential positivity is often a necessary assumption for drawing causal inferences, such as through marginal structural modeling. Unfortunately, verification of this a…
Penalized G-estimation for effect modifier selection in a structural nested mean model for repeated outcomes
Ajmery Jaman, Guanbo Wang, Ashkan Ertefaie +4
Effect modification occurs when the impact of the treatment on an outcome varies based on the levels of other covariates known as effect modifiers. Modeling these effect difference…
metamedian: An R package for meta-analyzing studies reporting medians
Sean McGrath, XiaoFei Zhao, Omer Ozturk +3
When performing an aggregate data meta-analysis of a continuous outcome, researchers often come across primary studies that report the sample median of the outcome. However, standa…
Standard error estimation in meta-analysis of studies reporting medians
Sean McGrath, Stephan Katzenschlager, Alexandra J. Zimmer +3
We consider the setting of an aggregate data meta-analysis of a continuous outcome of interest. When the distribution of the outcome is skewed, it is often the case that some prima…
State-of-the-art in selection of variables and functional forms in multivariable analysis -- outstanding issues
Willi Sauerbrei, Aris Perperoglou, Matthias Schmid +7
How to select variables and identify functional forms for continuous variables is a key concern when creating a multivariable model. Ad hoc 'traditional' approaches to variable sel…
Estimating the sample mean and standard deviation from commonly reported quantiles in meta-analysis
Sean McGrath, XiaoFei Zhao, Russell Steele +4
Researchers increasingly use meta-analysis to synthesize the results of several studies in order to estimate a common effect. When the outcome variable is continuous, standard meta…
Two-sample aggregate data meta-analysis of medians
Sean McGrath, Hojoon Sohn, Russell Steele +1
We consider the problem of meta-analyzing two-group studies that report the median of the outcome. Often, these studies are excluded from meta-analysis because there are no well-es…
One-sample aggregate data meta-analysis of medians
Sean McGrath, XiaoFei Zhao, Zhi Zhen Qin +2
An aggregate data meta-analysis is a statistical method that pools the summary statistics of several selected studies to estimate the outcome of interest. When considering a contin…